2015-04-16
(continued from above)
5. Automatic filling function
Some grinder powder bins are equipped with automatic filling function. Among them:
1. The grinder with automatic filling function
Because the operator needs to keep the powder bin in a full state at all times to ensure the accuracy of each powder output, some manufacturers will add it in the powder bin when designing the grinder Auto-fill function. Once the amount of coffee powder is below the minimum value, the grinder will automatically start grinding and fill the powder bin. General automatic grinders are equipped with automatic filling function. Note that there is a difference between this grinder and the grinder that grinds a single cup of powder at a time (this kind of grinder does not have a powder bin).
2. Semi-automatic or manual filling grinder
The grinder without automatic filling function is called semi-automatic or manual filling grinder. Only when the operator turns on the grinder, the grinder will grind coffee powder.
Six. Powder press
Some commercial professional grinders are equipped with powder press. There are usually two types of powder compactors: dynamometer compactors and automatic compactors. Among them:
1. Dynamometer compactor
Dynamometer compactor is usually located on the front side of the grinder. The dynamometer powder pressure device can ensure that the pressure of each powder is uniform and constant. The industry generally believes that the pressure of pressed powder should be 30 pounds. The advantage of the dynamometer powder press is that it is adjustable. However, the operator must ensure that the powder press is regularly cleaned and re-adjusted to ensure that the pressure is accurate. The grinders produced by Macap and Nuova Simonelli usually have this type of powder press.
2. Automatic powder press
automatic powder press is usually located at the powder outlet of the grinder. When the grinder is discharging powder, a screw pressing rod device can ensure that the coffee powder in the filter bowl is firm and uniform, while removing excess coffee powder. As the amount of powder in the filter bowl does not increase, the spiral pressure rod also continuously rotates and rises, and after reaching a predetermined height, the power supply of the grinder is automatically cut off, and the grinder stops outputting powder. After that, the screw rod will continue to rotate to remove excess coffee powder. La Marzocco's Swift and Vulcano Swift grinders have this type of powder press.
Seven, special function grinder
As mentioned above, the heat generated by the grinder during grinding will change the taste of coffee and make the coffee lose its original taste. Therefore, many manufacturers design special grinders to reduce the heat generated by friction, such as low-speed grinders and constant temperature grinders. among them.
1. Low-speed grinder
grinder manufacturers are always innovating technology to avoid friction and heat to the greatest extent. The low-speed grinder can complete the grinding process at a lower speed while ensuring the grinding efficiency to reduce friction. Because the heat generated by friction affects the taste of coffee, people who have high requirements for coffee quality or want to control the whole process of coffee making love this grinder very much.
2. Constant temperature grinder
This kind of grinder is extremely rare. The grinder itself can be heated or cooled to keep the blade temperature constant. The constant temperature grinder can ensure that the temperature in the grinding chamber remains constant during grinding. Coffee roasters are very fascinated by this grinder, because the constant temperature grinder can help them eliminate factors such as grinding heat, so as to better control the quality of coffee. The Mythos Clima Pro grinder produced by Nuova Simonelli has a thermostat.
Other manufacturers will also reduce the heat generated during grinding by air cooling or removing the blade.
8. The size of bean silo
bean silo usually depends on the size of the grinder and actual needs. Of course there are special cases. For example, La Marcozzo Swift and Mahlkoenig K30 grinders have double bean bins. Commercial grinders with double bean bins are extremely rare.
9. Motor
Some people think that the quality of the motor of the grinder is very important, but I personally think that the quality of the grinder blade will directly affect the taste and grinding efficiency of coffee. In addition, the life of the motor is longer. You can judge the load capacity of the grinder by the power of the motor. Of course, the greater the power, the greater the carrying capacity. Always remember that a good grinder is an important guarantee for high-quality coffee.
Okay, after all that, how should we choose a grinder? In the pick millWhen making a bean machine, do not choose a grinder with too small volume. Manufacturers often boast that small grinders have excellent performance, but as a consumer, you need to judge the volume and load capacity of the grinder by judging the power of the motor and the size of the blade, and choose the correct grinder according to your needs. machine.
If you want to buy a second-hand grinder, you must remember that the life of the grinder must be comparable to that of your coffee machine. Although there are controversies about the service life of commercial coffee machines, I think the maximum service life of commercial coffee machines should not exceed 7 years. My suggestion is to buy a brand new grinder. A second-hand grinder may be no problem when you buy it, but it will usually cause you a lot of trouble during use. The
commercial coffee machine only needs maintenance when it is used to its limit. But the grinder is different. Even if the grinder you buy is durable and the maintenance period has not expired, you should always repair your grinder to maximize the service life of the blade and motor.
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